What We Know

Age Distribution:
90% of all SIDS/SUID deaths occur in infants less than 6 months of age. 70% of deaths occur in infants between 2 and 4 months of age.

Seasonal Distribution:
More deaths occur in the winter and fall months;  most likely due to babies sleeping with too many layers of clothing or blankets in the winter

Population Distribution:
Approximately 3,000 – 3,500 babies die of sudden infant death in the U.S. each year. Annually in the state of Missouri, approximately 90 – 95 babies succumb to SUID. There is a gender difference in that 60% male vs. 40% female babies are affected.  SIDS/SUID affects babies of all races, religions and ethnic groups; however the statistics show us that the incidence of SIDS/SUID is greater for:

  • African American and Native American babies
  • low birth weight babies (< 2,500 grams)
  • babies born premature
  • babies whose mothers smoke during and after pregnancy
  • babies of multiple births (twins or triplets)
  • babies born within 18 months of one another and babies of younger mothers